Pu`er*il"i*ty (?), n.; pl. Puerilities (#). [L. puerilitas: cf. F. pu'erilit'e.]
1.
The quality of being puerile; childishness; puerileness.
Sir T. Browne.
2.
That which is puerile or childish; especially, an expression which is flat, insipid, or silly.
© Webster 1913.